Numerical investigation of cooling properties of La0.6Ca0.4MnO3 in an active magnetic regenerator system.

In this work, we report a numerical analysis and performance parameters of La0.6Ca0.4MnO3 perovskite manganite as active magnetocaloric material (MCM) in an active magnetic refrigeration cycle (AMR). This material displays a second-order phase transition at 260 K. The needed magnetocaloric parameters for the AMR model such the adiabatic temperature (?Tad) change and
the heat capacity (Cp) of the solid material were taken from previous studies, while the thermodynamic performance are calculated according to the one-dimensional (1D) AMR model and, investigated as a function of frequencies and fluid flow rates. The implementation of La0.6Ca0.4MnO3 material as a refrigerant in a 1T-AMR device would enable to generate a maximum no-load
temperature span of about 11 K, a maximum cooling power of 62 W and a coefficient of performance of 0.5 at 10 K temperature span for a low operating frequency of 0.5 Hz.